import turtle, math

def pentagon(t,s):
    for i in range(5):
        t.forward(s)
        t.left(72)
    return()

def square(t,s):
    for i in range(4):
        t.forward(s)
        t.left(90)
    return()

def triangle(t,s):
    for i in range(3):
        t.forward(s)
        t.left(120)
    return()

def polygon(t,s,n):
    for i in range(n):
        t.forward(s)
        t.left(360/n)

#-------
alice = turtle.Turtle()
polygon(alice,100,3)
polygon(alice,100,4)
polygon(alice,100,5)
polygon(alice,100,6)
polygon(alice,100,7)

polygon(alice,10,50)